The driver for the PhotoPC 550 camera is provided in the Sierra Image Expert software that came with the PhotoPC 550. The software should have come with the camera. If it did not, the camera should be returned to the store and exchanged. There is no Twain driver download available for this camera. The reason we do not have it posted for download on our website is because the driver was written by Sierra software and due to limitations of the copyright laws, EPSON cannot give away their software. To obtain the necessary software, contact EPSON Technical Support.

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